Driving mechanism for registering-machines.



O. F. KETTERING. DRIVING MECHANISM FOR REGISTERING MAGHINES.

APPLICATION FILED JUNE 9,1905

Patented Jan. 1909.

3 SHEETS-SHEET L wwptoz W1 inc-sacs G. F. KETTERING. I DRIVING MECHANISMFOR REGISTERING MACHINES. APPLICATION FILED JUNE 9,1905.

91 0,690. Patented Jan. 26, 1909.

3 SHEETS-SHEET 2.

LA LA G. P. KETTERING.

DRIVING MEGHANISM FOR REGISTERING MACHINES.

APPLICATION FILED JUNE 9,1905.

910 690. v Patented Jan.26,1909.

a; 3 SHEETS-SHEET 3 l I Q wine ocs v q r a, ecwtoiz my v v WQI M NITEDSTATES? PATENT OFFICE.

CHARLES F. KETTERING, OF DAYTON, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS,TO THE NATIONAL CASH REGISTER (INCORPORATED IN 1906.)

COMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO,

DRIVING MECHANISM FOR RE GISTERING-MACHIN ES. 7

Specification of Letters Patent.

Patented Jan. 26, 1909.

Application filed June 9, 1905. Serial N 0. 264,412.

. scription'.

This invention relates to improvements in driving mechanism for cashregisters, adding I machines and analogous machines, and has among itsobjects to provide upon the an electric form of driving mechanism whichshall beeconomical and eflicient in construction and capable of greatdurability and shall be free from undesirable and excessive sparkingmaking and breaking of the electric currents.

In the specific form which the present invention has assumed there is anelectric mos tor which is adapted to drive the main driving shaft of acash register, the connection between the motor and the driving shaftbeing effected by means of a magnetic clutch, and upon the depression ofone of a series of special keys ofthe cash register, an auxiliar circuitis made through this clutch and likewise through a magnetic switch whichis in series with the clutch, which switch thereupon makes the maincircuit through the motor to start the latter and thereby operate themachine, the magnetic clutch having been previously excited, and at theend of a complete operation of the machine, the circuit through themagnetic clutch and magnetically operated switch is first broken so thatupon the return of the switch to normal position the current through theelectric motor is broken but in the meantime the magnetic clutch hasbecome dead so that upon the breaking of the motor circuit there ispractically no load upon the motor and the sparking at the switchelectrodes is thereby minimized to a marked degree.

' The invention also comprises certain improvements in the method ofestablishing the circuit through said clutch upon the depression of oneof the special keys, and also includes certain improvements connectedwith the circuit establishing devices controlled by said special keys.

Wlt-h these and incidental objects in view, the invention consists incertain novel feaing the machine.

tures of construction and combination of parts, the essential elementsof which are set forth in appended claims and a preferred form ofembodiment of which is hereinafter specifically described with referenceto the drawings which accompany and form part of this specification.

Of said drawings:

Figure 1 represents an 'end elevation of the cash register to which thiselectric driving mechanism is appl ed showing the electric motor indotted outlme and certain of the driving gears. Flg. 1 represents adetail view of a restoring pawl. Fig. 2 represents a of the drivingearing, the motor and certam other parts being omitted for the sake ofclearness. Figs. 3 and 3 "represent detail views of certain of themachine unlocking and circuit establishing devices.

Fig. 4 represents a fragmentary detail view of the bank of special keysfor unlocking the machine and establishing the circuit for operat- Fig.5 represents a d1a grammatic view of the electrical connections. Thearticular type of cash register to which this invention is shown asapplied in the present case, is now well known vmthe art and appears ina large number of prior patents such for example as patent to Cleal andReinhard, No. 580,378, dated April 13, 1897: and hence it will not benecessary to go into a detailed description of the construction andoperation of the cash register proper, for the present invention isconcerned primarily with the electric drlving mechanism, which drivingmechanism may well be applied to any form of cash register or analogousregisterin machine, only one of the various banks 0 keys being utilizedin the present improvements, for the purpose of establishing the motorcircuit to cause the motor to operate the cash register in place of acrank handle such as hitherto has been customarily used to drive themachine. I

The electric driving motor 10 is shown in dotted outline in Fig. 1. Themam shaft 11 of this motor drives the Worm gear 12 (see also fig. 2),which gear is fast to ahollowed disk 13. containing the coils of amagnetlc clutch. This worm gear 12; and clutch disk 13 revolve looselyupon a shaft 14, and side by side with said clutch disk 13 is a softiron disk 15 fast to a collar 16 surrounding said rear elevation of aportion register.

shaft 14 and turning loosely thereon, to 'the other end of which collaris made fast a car wheel 17 which meshes with the gear w eel 18 fastupon the side of a largergear Wheel 19 both fast to a shaft 20 which isthe main driving shaft of the machine; and. the gear wheel. 19 mesheswith an upper gear wheel 21 which is fast upon the end of a secondtransverse shaft 22 of the machine. Thus when the circuit is establishedthrough the motor and the magnetic clutch, the drivin of the worm ear12-and clutch disk 13 wi carry therewith the soft iron disk 15 and thusdrive the gears 17, 18, 19 and 21 and thus operate the driving shaft 20and 22 of the cash register to perform the various functions w ch arecustomarily performed in machines of this character by the operation ofthe machine subse uent to the o eration of the transaction 3 The maindriving mechanism of the machine however is ordinarily locked and isunlocked by the operation of any one of a bank of s ecial keys, whichmay be clerks keys or epartment keys or. any other classification whichmay be desired, and these specia keys also, as an accompaniment to the-unlocking of the machine, causes'the making of certain circuits tocause the motor to operate and excite the clutch to connect the motor tothe main drivin shaft of the cash This normal 100 'ng of the drivingmechanism of the cash register is effected by means of a locking diskwhich is fast upon .one of. the special keys the aforesaid shaft 22 andslightly spaced apart from the aforesaid gear w ee 21 so as to-per'mitroom for the intervening latching pawl 31, which is pivoted loosely'onthe shaft 22 and is provided with a latching nose 32 and iss'prmgpressed by means of a spring 33 to rotate t e pawl to carry theprojection on the opposite side thereto against the stop pin 34.Thelocking disk 30 is formed with a locking shoulder 35 which is engagedby an upwardly projecting nose 36 of a lockin lever 37 shown in detailin.

Fig. 3', which ever has a forwardly extending foot 38 which cooperateswith certain release key mechanism as will later be de scribed. A spring39 normally holds the lever 37 so as to carry the nose 36 intoengagement with the locking shoulder 35 so that the advance rotatinmovement of the gear wheel 21 (as shown by the direction of the arrow)is prevented and the machine is thereby normally locked. The mechanismfor releasing this look by the operation of now scribed. The bank ofspecial keys 40 (see Fig. 4) cooperate with a key detent 41 so that uponthe depression of any key the detent will be moved upward slightly in awell known manner, the detent being subsequently locked to retain thekey in depressed position, by mechanism not shown herein etermining eements.-.

rints the locking lever comp be de' but described inthe aforesaidpatent.

detent carries a lug 42 which acts u on the beveled edge of a curved arm43 w en the detent is ralsed b the depression of the key e shaft 44.This shaft 44 whereby to rock t to theother side of the extends throughmachine and, as shown in Fig. 1 has fast u on its right hand end'atripping lever. 45,-

s own also in detail in Fi 3. On the rearward end of this tripping Teveris a laterally projecting pin 46 which normally stands ust above a dog47 which is pivoted upon the side of the aforesaid locking lever37, asshown in Fig. 3*, and a spring 48 normally holds the upper end of thedog 47 forward in the position shown in Figs. 1 and 3 The tripping leveris also formed with an upwardly extending beveled nose 50 which 006erates with a beveled wall 51 of a recess 52 ormed in a disk 53 fastupon the upper shaft 22 (see also Fig. 3).

When one of the s ecial keys is depressed and the shaft 44 roc red: inthe manner just described, the rearward end of the tripping lever 45 isrocked downward, and the pin 46 l strikes the upper end of the dog 47and thereby forces downward the rearward end of the locking lever 37 soas to withdraw its locking nose 36 from contact with the lockingshoulder 35 and thereby unlock the machine; and the nose 36 is carrieddownward far enough to permit the latching pawl 31 to spring forward andover the anti-friction roller 32 projectin laterally from such lockingnose 36 so as t ereby to hold the locking lever 37 in depressed andunlocking position. The driving gears of the cash register are nowunlocked and free to be rotated by the electric motor, in the directionshown by the arrows, and rior to the complete rotation of the shaft 22the clerks keys 40 are released in a well known manner and the shaft 44returns to normal position thereby permitting the tripping lever 45 toreturn to normal upper position under the tension of its spring 45"attached to the forward end thereof; and this also per- 37 to return tonormal locking position under the tension of its sprin etes itsrevolution, the nose 37 forces itsel up into its correspondin recess insaid disk and again locks the shou der 35, and at the same time-theroller 32 carries the latching pawl 31 back to normal position againstthe tension of its s ring 33 so that the machine is now locke pleterevolution. ln order to revent the machine from remaining unloc ed byretaining the special key 40 in depressed position, which might occureither through intentional manipulation or carelessness by holding downon the s ecial key, the aforesaid disk 33 is provided.

39 so that when the locking disk 30 at the end of such com- I the arrow,the beveled wall 51 strikes the nose 50 and carries the tripping leverstill further, downward, and the location of the pin 46 with referenceto the dog 47 upon which it impinges, is-such that this further orsecondary movement of the tripping lever 45 and pin 46-causes the pin towipe past the forward edge of the dog 47 so as now to, assume a positionin front ofsaiddog'a'nd thus afford noblocking obstruction to the returnof th'elocking lever 37 to normal locking posi- '37 has been disabled,and the machine cannot again be operated untilthis special key isreleased to allow the pin 46 to return to normal upper position, inwhich case it again wipes by the dog 47 and the dog springs forwardunder the pin and thereby the parts are in normal positlon.

For the purpose of positively restoring the locking lever 37 tov lockingposition near the completion of the operation of the machine, theaforesaid soft iron disk 15 is provided with a laterally projectinganti-friction roller 60 which strikes a dog 61 pivoted upon a laterallyprojecting pin 62 extending from the side of the rearward end of thelever 37.

' The dog 61 is formed with an'enlarged aperposition, and then the pin60 ture 63 which surrounds a pin 64 projecting laterally from the lever37 so as to permit a slight degree of movement of the dog. Near the endof the rotation of the disk 15 thepin 60 strikes the lowerend -of thedog 61 and carries the same against the pin 64, swinging about thepivotal pin 62 and thereby lifts the locking lever 37 positively intolooking wipes by the dog 61 and the dog drops back under its own wel htto normal position as shown in Fig. 1.

T e ordinary form of key release is provided com rising a'hand levermounted upon a. rocr shaft 71 and having a slot and' pin connection withthe lowerend of a lever 72 which is pivoted at its middle point and atits upper end carries a pin 73 which cooperates with the aforesaid foot83 of the lever 37 v This key release lever 70 when depressed rocks theshaft 71 to release all of the key detents of the machine so as torestore to normal osition any of the previously depressed eys and thuspermit the correction of errors, which mechanism is well known in theart, and the addition of the lever 72 is for the purpose of preventingthe unlocking of the machine by the special keys while the key releaseis being operated, this taking placeby reason of the fact that the pin73 is thereby carried over the foot 38 and prevents the rocking of thelocking lever 37'to unlock the machine; and reversely, when the lockinglever 37 is once depressed to unlock the machine the foot 38 stands inthe rear of the pin 73 and revents the key release from being operated Aspring 74 normally holds the lever 72 in the position shown in Fig. 1.

The electric connections for starting the motor will now be describedwith the aid of the diagrammatic Fig. 5. Fastened at one end upon theinsulation block (see Fig. 1) is a spring electrode strip of metal 81which extends rearward and rests upon an insulated cam roller 82 carriedupon the aforesaid pin 62 which projects laterally from the side of theaforesaid locking lever 37. -Upon the opposite end of the block 80 is araised electrode or terminal 83. A lead-wire 84 connects the spring 81with the main battery 85 (see Fig. 5), and a lead-wire 86 connects theterminal 83 with the coils of the magnetic clutch 87. These ,coils 87 ofthe magnetic clutch are contained withiri the aforesaid clutch disk 13,and are in series with a magnetic switch which will now be described.This switch comprises a casing 90 (see Figs. 1 and 2) containing themagnetic solenoid coil 91 (see Fig. 5); this coil being in series withthe magnetic clutch coils 87 and the battery 85. The energizing ofthe'solenoid coil 91 magnetizes its core 92 and draws downward thepivoted armature 93 carrying the contact making roller 94, which rollerwhencarried downward strikes against two spring contact terminals 95 and96. The lead-wire connects the'electrode 95 with the motor'lO (see Fig.5), and the lead-wire 101 connectsthe electrode 96 with the main battery85, and the solenoid coil 91 is also connected at the point 102 withsaid electrode and said lead-wire 101. 103 (see Fig. 5) constitutes theoriginal shunt field for the motor 10. The operation of these circuitmaking devices will now be described. When the locking lever'37 isrocked downwardin the manner heretofore described to unlock the machine,the insulated roller 82 is of course also carried downward, and thespring electrode 8l resting-thereon is now free to descend under its ownspring tension and make the contact with the terni-inal 83. From Fig. 5it will be seen that this completes the circuit through the battery 85the magnetic coils 87 the magnetic switch solcnoid 91 and the lead-wire101, and thereby the core 92 of the magnetic switch is 1nagnetized anddraws downward the armature 93 against the tension of its spring 97, andthis causes the roller 94 to bridge across the contact between thespring contact electrodes 95 and 96 which of course are mounted upon asuitable insulated block98. This making of the connection between theelec trodes 95 and 96 now establishes the main circuit through the motor10, this motor circuit being now a divided circuit between the points102 and 104 (see the other branch of the dividedcircuit being themagnetic clutch and the magnetic switch solenoid coil. The circuit nowbeing made through the motdr the motor revolves its shaft 11arid'through the caring/above described operates the machine to turn themain driving shafts thereof one complete revolution, and as above set.forth, near the end of such revolution the locking lever 37 is forcedbackward to normal locking osition, and theinsulated cam roller 82 is te'n carried upward a aim to force the spring contact strip 81 OK of itsterminal 83 and thus break the circuit through the magnetic clutch andthe magnetic switch solenoid, so that the sprin armature 92 isimmediately released and t us the current thrdugh the motor is thenbroken, and the machine thereby is automatically locked and the motorcircuit this circuitthrough the clutch;and likewise the clutch circuitis broken, near the end of the operation of the machine before the motorcircuit is broken, so that when the motor circuit is broken the magneticclutch is practically dead and there is no load upon the -motor.Although of course these intervals of time between the making of theclutch circuit and the main motor circuit are practicall inappreciable,yet there is nevertheless sue a'sequence in themaking of these twocircuits that the making of the motor circuit subsequently'to the clutchcircuit minimizes the sparking at the spring electrode strip 81 andterminal 83, and the breakin of the the strip makes its contact byreason of its motor circuit subsequently-t0 the making of the clutchcircuit when there is no load on the machine also minimizes the sparkingboth at the terminal 83 and at the motor circuit terminals and 96. Afurther advantage to be pointed out in the use of the spring contactstrip 81 is that own s ring tension, and the pressure of'the specia keyforreleasing the machine does not have to be utilized to exertaddltional force to carry the circuit making contacts together; and moreespecially does its spring strip construction'present an advantage inthat it permits the contact surfaces to be free from excessive wear dueto excessive pressure thereon byany positively actuated,

be given a further movement to disable the efl'ect of the tripping leveru on'the locking lever in the manner describe if this further.

or secondary movement gave also a still further movement to any contactmaking devices it would cause undue pressure between the same-and also aslidi of the contact points over each other which would cause rapidwear'of such contact points and make thesame unsatisfactory from acommercial stand oint of durability; and thus it is obvioust at themaking of the contact by the s ring strip due to its own tension hasthese ecided advantages over a positively operated contact makingdevices.

It is to be observed from Fig. 1 that the aforesaid insulated cam roller82 is eccentrically pivoted upon this in 62, and the purose of this isso that tiie rollermay be adusted about its ivotal point and held inadjusted position by a suitable nut and thus norrrally hold the contactmaking strip 81 nearer or further away from its terminal 83 so asthereby to regulate the,time of making and breaking the circuit. throughthe magnetic clutch relatively to the unlockin and locking movementpfthe lever'37, an this also avoids thenecessity of constantly bendingthe s ring strip 81 to secure the proper timing a ustment.

, While t e form of mechanism here shown and described 'is admirablyadapted to fulfil the objects primarily stated, it is to be understoodthat it is not intended to confine the invention to the one form ofembodiment herein disclosed, for it is susceptible of embodiment invarious forms all coming within the scope of the claims which follow.

Havmg' thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In an electric driving device, the combination with a driving motor,of a driven member; a ma netic clutch connecting said motorand saidriven member, said clutch including clutch coils; a magnet operatedswitch containing magnetic coils; a circuit including said clutch coilsand said magnet coils in series; and a circuit including said 'motor,which circuit is made and broken by said magnetically operated switch.

2. In an electric driving device, the combination with a driving motor,of a driven member; a ma etic clutch connecting'said motor and saicon-tainin clutch coils; a magnetically operated switch containingmagnetic coils; and a divided circuit arrangement comprising in onebranch the driving motor, and in the other; branch the clutch coils andthe mag netic coils,- said magnetic switch .servingto driven member,said clutch driving motor, of a driven member of said registeringmachine; a magnetic clutch connectin said motor and said driven member,said cutch including clutch coils; a magnetically operated switchincluding magnetic coils; a circuit including said clutch coils and saidmagnetic coils in series; a circuit including said motor, which circuitis made and broken by said magnetically op erated switch; manipulativemeans connected with the registering machine for making' .the circuit inthe clutch coils and the magnetic coils; and means for automaticallybreaking the latter circuit at the end of the complete operation of themachine.

-5. In an electric driving device, the combination with a driving motor,of a normally locked mechanism operated thereby, a circuit includingsaid motor, a spring contact device for completing said circuit,manipulative means for controlling the position of said contact deviceand unlocking said mechanism, and means operated by said mechanism forrestoring the spring contact device to normal position and again lockingthe mechanism.

6. In an electric driving device, the combination with an electricmotor, of a normally locked mechanism driven thereby, a circuitincluding said motor, a spring contact arranged to close said circuit,manipulative means and connections for permitting said contact to closesaid circuit and also releasing said mechanism, and an anti-frictionroller carried by said mechanism and serving to restore said springcontact and again lock the mechanism.

7. In an electric driving device, the combination with a driving motor,of a driven member, a magnetic clutch connecting said motor and saiddriven member; said clutch containing clutch coils; a magnetically'oerated switch containing magnetic coilg; a circuit including said clutchcoils and said ma netic coils in series; a circuit .including sai motorwhich circuit is made and broken by said magnetically operated switch; aspring contact making device for establishing the circuit in the clutchcoils and magnetic coils; and means for controlling the position of saidspring contact device.

8. In an electric driving device, the combinationavith a driving motor,of a normally locked driven member; a circuit including said motor; acontact making device for controlling the establishment of the circuitthrough the motor, said contact device comprising a spring strip and acontact making terminal in proximity thereto; means for normallyretaining said strip'from contact making position with said terminal;and manipulative means for disabling said retaining means to permit saidstrip to rest upon said terminal and serving to unlock the drivenmember.

9. In an electric driving device for registering machines, thecombination with a driving motor, of a driven member of said machine; acircuit including said motor; a locking member for said driven member; atripping member for operating said locking member; manipulative meansfor giving said tripping member an initial movement to actuate saidlocking member and thereby unlock said driven member and effect themaking of the motor circuit; and means for giving said tripping member asecondary movement, with provisions for causing this secondary movementto disable the effectiveness of the tripping member upon said lookingmember.

10. In an electric device for registering machines, the combination witha driving motor, of a driven member of saidregistering machine; acircuit for said motor; a looking lever for engaging said driven memberto normally look the same; atripping lever for operating said lockingleverito unlock the machine; a dog carried by said locking lever andoperated upon by said tripping lever; manipulative means for giving saidtripping lever an initial movement to act upon said dog and unlock themachine and effect the making of the motor circuit; and means connectedwith said driven member for giving said tripping lever a secondarymovement whereby to free the 'same from said dog and permit the lockinglever to automatically return to locking position. i

11. In an electric device for registering machines, the combination witha driving motor, of a driven member of said registering machine; acircuit for said motor; a locking lever for engaging said driven memberto normally lock the same; a tripping lever for operating said lockinglever, to unlock the machine; a dog carried bysaid locking lever andoperated upon by said, tripping lever; manipulative means for givingsald tripping lever an initial movement to act upon said dog and unlockthe machine and effect the making of the motor circuit; a spring contactstrip and cooperating terminal in proximity thereto with electricalconnections for controlling the making of the motor circuit; and

4 controlle trolling magn .5 the strip to make contact with its terminalwhen thelever is inunlocked position.-

12. In an electric device for registering machines, the combination witha driving motor, of a driven; member of said register- 10 ing machine; acircuit for said motor; a looking lever for en aging said driven memberto normally look t e same; a trippinglever. for operating saidbcking'TevEr to unlock the machine'f'a dog carried by said lock lever and oerated upon by said tripping lever manipu ative means for giving saidtripping lever an initial movement to act upon sald dog and unlock themachine and eiiect the making of the motor circuit; a restoring dogcarried by 2 said lockin lever; and-provislons connected w1th saidriv'en member for actuating said restoring dog to positively restore thelocking lever to normal locking position. j 13. In an electric drivindevice, the combination with a driving member, of a driv en member, acircuit for said motor; a locking member forsa'iddriven member -;aspring contact making strip in proximity to a terminal and havingelectrical-connections for eilectlng the establishmentof the motorcircuit; provisions connected with said locking member for normallyholding said strip out of contact with its terminal; and means connectedwith said provisions for varying the normal extent of se aration betweensaid strip and its termina whereby to .vary the timing betweentheunlocking movement of the locking member and the contact making ofsaid spring stri a 1 Inan electric driving device, the combination witha driving motor, and an operat: in mechanism driven thereby, ofamagnetical y controlled clutch for connecting said motor and o cratingmechanism, a magnetically 3 switch, a circuit for operating said clutchand switch, and a motorclrcuit includingsai switch. i

'15. In an electric driving device, the combination with a driving motorand an operating mechanism driven thereby, of a magnetically controlledclutch for connecting said motorand o crating mechanism, a magneticallycontrolle switch, a circuit for operating said clutch and switch, andhaving a branch in- 5 5 cluding the switch andthe motor. 1

16. In electric driving device, the combination witha drivin motorand amechanism driven thereby, o a magneticclutch for connectin the.mechanism to the motor, a

switch an a controllin magnet for same and,

a circuit including s ai clutch and said conet and having a branchinclud- 17. In an electric driving device,the com bination with adriving motor, of a mechani'sm driven thereby, a clutch for connectingsaid mechanism to the motor, a circuit closer for the motor, and acircuit 0 erating said clutch and circuit. closer, there close the motorcircuit.

18. In an electric driving device, the comy serving to 1 bination withan electric motor, of an operating mechanism driven thereby, a clutchfor connecting said mechanism to the motor, a circuit closer,.-a circuitoperating'said clutch andcircuit closer and a branch circuit includingsaid circuit closerand motor.

19. In an electric driving device, the combination with an electricmotor, and an operating mechanism arranged to bedriven thereby, of amagnetic clutch for connecting said mechanism to said motor, a circuitcloser for said motor, and a circuit including said clutch and servingto operate the circuit closer.

20. In an electric driving device, the combination with a motor and amechanism arranged to be driven thereby, of a magnetic clutch forconnecting said mechanism to said motor, a circuit closer for saidmotor, and a circuit including said clutch and serving to operate thecircuit closer and having a branch including the ,circuit closer and themotor.

21. In an electric driting device, the com-.

bination with an electric motor, of a device vent the return of thecircuit closer until the movement of the machine has been completed.-

h 22. In 11 electric driving device, the combination with an electricmotor, of an operating mechanism arranged to be driven thereby, a diskhaving a de ression and movable with the operating mec anism, a maincircuit closer for said motor with means for operating it, said meansbeing prevented from operation. except after the disk has made acomplete movement. s

23. In an electric driving device, the combination with an electricmotor, of a mechananism driven thereby, a circuit closer for said motor,an arm normally holding said closer in circuit breakin position butwhich when moved permits 0 using of the circuit, and means operatedbysaid driven mechanism for positlvely restoring said arm to normal i24. ;In an electric driving device, the comcircuit closer to circuitbreaking position.

bination with an electric motor, of a mech-,

anism driven thereby, a spring circuit closer for said motor normallyunder tension, means normally holding said closer in circuit break-- ingposition, but which when moved permits:

Isuchcircuit closer to follow it to closin' position, and means forpositively restoring said holding means to normal position, and therebypositively moving said circuit closer to circuit breaking position.

25. In an electric driving device, the combination with an electricmotor, and a mechanism driven thereby, of a closer for the circuit ofsaid motor comprising a spring contact, an arm carrying a roller forengaging said spring contact and having a projection, a second arm and apawl thereon engaging said projection, and means operated by said drivenmechanism for moving said second arm in one direction to restore saidcircuit closer to breaking position. I

26. In an electric driving device, the combination with an electricmotor, and a mechanism driven thereby, of a circuit closer for saidmotor, a pivoted arm controlling said circuit closer, said arm carryingat oneend a locking device for the driven mechanism and at the other endbeing pointed, and a manipulative device having a projection positioneding same, connections between said cam lever and said lockin lever, anelectric motor and a circuit there or, a clutch device for connectingsaid motor to said operating mechanism, a circuit closer controlled fromsaid locking lever, and means actuated by the operat' ing mechanism forrestoring the locking lever to locking position and thereby moving saidcircuit closer to circuitb reakingposition.

In testimony whereof I aflix my signature in the presence of twowitnesses.

CHARLES F. KETTERING. Witnesses:

WM. 0. HENDERSON, S. P. DAvIs.

